The Calendar in QSToolbox shows all items with a due date.
You can show only your items with 'mine' or see everything with 'show all'. Scroll forward to plan for next month, or backwards to see a previous month.
Items are colour coded by what they are, and you can use the module filter buttons at the top to view only certain types, like only 'Events' or only 'Assets' due dates.
There's a print button if that's the way you like your calendar.